Defines starting with `o' in BSD4-4

• O kern/tty.c:80
• O_ACCMODE sys/fcntl.h:60
• O_APPEND sys/fcntl.h:75
• O_ASYNC sys/fcntl.h:79
• OBJ_ACTIVE vm/vm_object.h:104
• OBJ_CANPERSIST vm/vm_object.h:102
• OBJ_INTERNAL vm/vm_object.h:103
• OBJ_ITEM netiso/xebec/sets.h:10
• OBJ_SET netiso/xebec/sets.h:11
• OBUFSIZ sys/tty.h:100
• O_CREAT sys/fcntl.h:82
• ODDP sys/ioctl_compat.h:100
• O_EXCL sys/fcntl.h:84
• O_EXLOCK sys/fcntl.h:78
• OFILESIZE sys/filedesc.h:88
• O_FSYNC sys/fcntl.h:80
• OLDDIRFMT ufs/ufs/dir.h:108
• OMAGIC i386/include/exec.h:71
• OMAP_ANON vm/vm_mmap.c:153
• OMAP_COPY vm/vm_mmap.c:154
• OMAP_FIXED vm/vm_mmap.c:156
• OMAP_INHERIT vm/vm_mmap.c:157
• OMAP_SHARED vm/vm_mmap.c:155
• O_NDELAY sys/fcntl.h:116
• ONLCR sys/termios.h:113
• ONLINE i386/isa/wt.c:169
• ONLYA kern/tty.c:1819
• ONLYB kern/tty.c:1820
• O_NOCTTY sys/fcntl.h:92
• ONOEOT sys/termios.h:115
• O_NONBLOCK sys/fcntl.h:74
• OPCHAR netiso/xebec/llscan.c:23
• OPEN i386/isa/wd.c:90
• OPEN_MAX sys/syslimits.h:43
• OPENRAW i386/isa/wd.c:94
• OPMASK sys/namei.h:100
• OPOST sys/termios.h:111
• OPTSIZ netinet/ip_input.c:891
• ORDINARY sys/tty.h:134
• O_RDONLY sys/fcntl.h:57
• O_RDWR sys/fcntl.h:59
• O_SHLOCK sys/fcntl.h:77
• OSIOCGIFADDR sys/ioctl.h:176
• OSIOCGIFBRDADDR sys/ioctl.h:183
• OSIOCGIFCONF sys/ioctl.h:186
• OSIOCGIFDSTADDR sys/ioctl.h:179
• OSIOCGIFNETMASK sys/ioctl.h:188
• OTHERS ufs/ufs/ufs_lockf.c:65
• OTIOCCONS sys/ioctl_compat.h:162
• O_TRUNC sys/fcntl.h:83
• OTTYDISC sys/ioctl_compat.h:163
• OUT netiso/xebec/debug.h:4
• ovbcopy net/slcompress.c:66
• O_WRONLY sys/fcntl.h:58
• OXTABS sys/termios.h:114